121010002101111 has 4 divisors (see below), whose sum is σ = 161346669468152. Its totient is φ = 80673334734072.

The previous prime is 121010002101091. The next prime is 121010002101127. The reversal of 121010002101111 is 111101200010121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121010002101111 - 2¹⁰ = 121010002100087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010002001111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20168333683516 + ... + 20168333683521.

It is an arithmetic number, because the mean of its divisors is an integer number (40336667367038).

Almost surely, 2^{121010002101111} is an apocalyptic number.

121010002101111 is a deficient number, since it is larger than the sum of its proper divisors (40336667367041).

121010002101111 is an equidigital number, since it uses as much as digits as its factorization.

121010002101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40336667367040.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 121010002101111 its reverse (111101200010121), we get a palindrome (232111202111232).

The spelling of 121010002101111 in words is "one hundred twenty-one trillion, ten billion, two million, one hundred one thousand, one hundred eleven".